Sounds like you are on the right track with the fuel pump. You will need to empty the tank and drop it of course. Be ready for the possible need to cut and replace the hanger Bolts, they might be too rusted for the nuts to come off.
Just a suggestion...I would replace the whole Fuel Module rather than just the pump, screen and seal because the gauge resistor will also probably be about worn through.
One thing about this, even if it ends up not being the fuel pump it was probably ready to quit any day anyhow so it's good Preventative Maintenance towards the future.
The line quick connector clips are fragile...
